Monteggia's FractureUlna FracturesRadius FracturesForearm InjuriesUlnaRadiusElbow JointBone and BonesDislocationsBone DensityForearmAbsorptiometry, PhotonBone RemodelingMineralsOsteoporosisNorwayBone ResorptionBone MarrowBone NeoplasmsBone DevelopmentBone Marrow CellsBone DiseasesRegional Blood Flow